1 /* 2 * Copyright (c) 2000, 2019, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 * 23 */ 24 25 #ifndef SHARE_C1_C1_LIRASSEMBLER_HPP 26 #define SHARE_C1_C1_LIRASSEMBLER_HPP 27 28 #include "c1/c1_CodeStubs.hpp" 29 #include "ci/ciMethodData.hpp" 30 #include "oops/methodData.hpp" 31 #include "utilities/macros.hpp" 32 33 class Compilation; 34 class CompiledEntrySignature; 35 class ScopeValue; 36 class BarrierSet; 37 38 class LIR_Assembler: public CompilationResourceObj { 39 private: 40 C1_MacroAssembler* _masm; 41 CodeStubList* _slow_case_stubs; 42 BarrierSet* _bs; 43 44 Compilation* _compilation; 45 FrameMap* _frame_map; 46 BlockBegin* _current_block; 47 48 Instruction* _pending_non_safepoint; 49 int _pending_non_safepoint_offset; 50 51 Label _unwind_handler_entry; 52 Label _verified_value_entry; 53 54 #ifdef ASSERT 55 BlockList _branch_target_blocks; 56 void check_no_unbound_labels(); 57 #endif 58 59 FrameMap* frame_map() const { return _frame_map; } 60 61 void set_current_block(BlockBegin* b) { _current_block = b; } 62 BlockBegin* current_block() const { return _current_block; } 63 64 // non-safepoint debug info management 65 void flush_debug_info(int before_pc_offset) { 66 if (_pending_non_safepoint != NULL) { 67 if (_pending_non_safepoint_offset < before_pc_offset) 68 record_non_safepoint_debug_info(); 69 _pending_non_safepoint = NULL; 70 } 71 } 72 void process_debug_info(LIR_Op* op); 73 void record_non_safepoint_debug_info(); 74 75 // unified bailout support 76 void bailout(const char* msg) const { compilation()->bailout(msg); } 77 bool bailed_out() const { return compilation()->bailed_out(); } 78 79 // code emission patterns and accessors 80 void check_codespace(); 81 bool needs_icache(ciMethod* method) const; 82 83 // returns offset of icache check 84 int check_icache(); 85 86 bool needs_clinit_barrier_on_entry(ciMethod* method) const; 87 void clinit_barrier(ciMethod* method); 88 89 void jobject2reg(jobject o, Register reg); 90 void jobject2reg_with_patching(Register reg, CodeEmitInfo* info); 91 92 void metadata2reg(Metadata* o, Register reg); 93 void klass2reg_with_patching(Register reg, CodeEmitInfo* info); 94 95 void emit_stubs(CodeStubList* stub_list); 96 97 bool needs_stack_repair() const { 98 return compilation()->needs_stack_repair(); 99 } 100 101 // addresses 102 Address as_Address(LIR_Address* addr); 103 Address as_Address_lo(LIR_Address* addr); 104 Address as_Address_hi(LIR_Address* addr); 105 106 // debug information 107 void add_call_info(int pc_offset, CodeEmitInfo* cinfo, bool maybe_return_as_fields = false); 108 void add_debug_info_for_branch(CodeEmitInfo* info); 109 void add_debug_info_for_div0(int pc_offset, CodeEmitInfo* cinfo); 110 void add_debug_info_for_div0_here(CodeEmitInfo* info); 111 ImplicitNullCheckStub* add_debug_info_for_null_check(int pc_offset, CodeEmitInfo* cinfo); 112 ImplicitNullCheckStub* add_debug_info_for_null_check_here(CodeEmitInfo* info); 113 114 void set_24bit_FPU(); 115 void reset_FPU(); 116 void fpop(); 117 void fxch(int i); 118 void fld(int i); 119 void ffree(int i); 120 121 void breakpoint(); 122 void push(LIR_Opr opr); 123 void pop(LIR_Opr opr); 124 125 // patching 126 void append_patching_stub(PatchingStub* stub); 127 void patching_epilog(PatchingStub* patch, LIR_PatchCode patch_code, Register obj, CodeEmitInfo* info); 128 129 void comp_op(LIR_Condition condition, LIR_Opr src, LIR_Opr result, LIR_Op2* op); 130 131 PatchingStub::PatchID patching_id(CodeEmitInfo* info); 132 133 public: 134 LIR_Assembler(Compilation* c); 135 ~LIR_Assembler(); 136 C1_MacroAssembler* masm() const { return _masm; } 137 Compilation* compilation() const { return _compilation; } 138 ciMethod* method() const { return compilation()->method(); } 139 140 CodeOffsets* offsets() const { return _compilation->offsets(); } 141 int code_offset() const; 142 address pc() const; 143 144 int initial_frame_size_in_bytes() const; 145 int bang_size_in_bytes() const; 146 147 // test for constants which can be encoded directly in instructions 148 static bool is_small_constant(LIR_Opr opr); 149 150 static LIR_Opr receiverOpr(); 151 static LIR_Opr osrBufferPointer(); 152 153 // stubs 154 void emit_slow_case_stubs(); 155 void emit_static_call_stub(); 156 void append_code_stub(CodeStub* op); 157 void add_call_info_here(CodeEmitInfo* info) { add_call_info(code_offset(), info); } 158 159 // code patterns 160 int emit_exception_handler(); 161 int emit_unwind_handler(); 162 void emit_exception_entries(ExceptionInfoList* info_list); 163 int emit_deopt_handler(); 164 165 void emit_code(BlockList* hir); 166 void emit_block(BlockBegin* block); 167 void emit_lir_list(LIR_List* list); 168 169 // any last minute peephole optimizations are performed here. In 170 // particular sparc uses this for delay slot filling. 171 void peephole(LIR_List* list); 172 173 void return_op(LIR_Opr result); 174 175 // returns offset of poll instruction 176 int safepoint_poll(LIR_Opr result, CodeEmitInfo* info); 177 178 void const2reg (LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code, CodeEmitInfo* info); 179 void const2stack(LIR_Opr src, LIR_Opr dest); 180 void const2mem (LIR_Opr src, LIR_Opr dest, BasicType type, CodeEmitInfo* info, bool wide); 181 void reg2stack (LIR_Opr src, LIR_Opr dest, BasicType type, bool pop_fpu_stack); 182 void reg2reg (LIR_Opr src, LIR_Opr dest); 183 void reg2mem (LIR_Opr src, LIR_Opr dest, BasicType type, 184 LIR_PatchCode patch_code, CodeEmitInfo* info, 185 bool pop_fpu_stack, bool wide, bool unaligned); 186 void stack2reg (LIR_Opr src, LIR_Opr dest, BasicType type); 187 void stack2stack(LIR_Opr src, LIR_Opr dest, BasicType type); 188 void mem2reg (LIR_Opr src, LIR_Opr dest, BasicType type, 189 LIR_PatchCode patch_code, 190 CodeEmitInfo* info, bool wide, bool unaligned); 191 192 void shift_op(LIR_Code code, LIR_Opr left, LIR_Opr count, LIR_Opr dest, LIR_Opr tmp); 193 void shift_op(LIR_Code code, LIR_Opr left, jint count, LIR_Opr dest); 194 195 void move_regs(Register from_reg, Register to_reg); 196 void swap_reg(Register a, Register b); 197 198 void emit_op0(LIR_Op0* op); 199 void emit_op1(LIR_Op1* op); 200 void emit_op2(LIR_Op2* op); 201 void emit_op3(LIR_Op3* op); 202 void emit_opBranch(LIR_OpBranch* op); 203 void emit_opLabel(LIR_OpLabel* op); 204 void emit_arraycopy(LIR_OpArrayCopy* op); 205 void emit_updatecrc32(LIR_OpUpdateCRC32* op); 206 void emit_opConvert(LIR_OpConvert* op); 207 void emit_alloc_obj(LIR_OpAllocObj* op); 208 void emit_alloc_array(LIR_OpAllocArray* op); 209 void emit_opTypeCheck(LIR_OpTypeCheck* op); 210 void emit_opFlattenedArrayCheck(LIR_OpFlattenedArrayCheck* op); 211 void emit_opNullFreeArrayCheck(LIR_OpNullFreeArrayCheck* op); 212 void emit_opSubstitutabilityCheck(LIR_OpSubstitutabilityCheck* op); 213 void emit_typecheck_helper(LIR_OpTypeCheck *op, Label* success, Label* failure, Label* obj_is_null); 214 void emit_compare_and_swap(LIR_OpCompareAndSwap* op); 215 void emit_lock(LIR_OpLock* op); 216 void emit_call(LIR_OpJavaCall* op); 217 void emit_rtcall(LIR_OpRTCall* op); 218 void emit_profile_call(LIR_OpProfileCall* op); 219 void emit_profile_type(LIR_OpProfileType* op); 220 void emit_delay(LIR_OpDelay* op); 221 void emit_std_entries(); 222 int emit_std_entry(CodeOffsets::Entries entry, const CompiledEntrySignature* ces); 223 void add_scalarized_entry_info(int call_offset); 224 225 void arith_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest, CodeEmitInfo* info, bool pop_fpu_stack); 226 void arithmetic_idiv(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr temp, LIR_Opr result, CodeEmitInfo* info); 227 void intrinsic_op(LIR_Code code, LIR_Opr value, LIR_Opr unused, LIR_Opr dest, LIR_Op* op); 228 #ifdef ASSERT 229 void emit_assert(LIR_OpAssert* op); 230 #endif 231 232 void logic_op(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr dest); 233 234 void roundfp_op(LIR_Opr src, LIR_Opr tmp, LIR_Opr dest, bool pop_fpu_stack); 235 void move_op(LIR_Opr src, LIR_Opr result, BasicType type, 236 LIR_PatchCode patch_code, CodeEmitInfo* info, bool pop_fpu_stack, bool unaligned, bool wide); 237 void volatile_move_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info); 238 void comp_mem_op(LIR_Opr src, LIR_Opr result, BasicType type, CodeEmitInfo* info); // info set for null exceptions 239 void comp_fl2i(LIR_Code code, LIR_Opr left, LIR_Opr right, LIR_Opr result, LIR_Op2* op); 240 void cmove(LIR_Condition code, LIR_Opr left, LIR_Opr right, LIR_Opr result, BasicType type); 241 242 void call( LIR_OpJavaCall* op, relocInfo::relocType rtype); 243 void ic_call( LIR_OpJavaCall* op); 244 void vtable_call( LIR_OpJavaCall* op); 245 int store_value_type_fields_to_buf(ciValueKlass* vk); 246 247 void osr_entry(); 248 249 void build_frame(); 250 251 void throw_op(LIR_Opr exceptionPC, LIR_Opr exceptionOop, CodeEmitInfo* info); 252 void unwind_op(LIR_Opr exceptionOop); 253 void monitor_address(int monitor_ix, LIR_Opr dst); 254 255 void align_backward_branch_target(); 256 void align_call(LIR_Code code); 257 258 void negate(LIR_Opr left, LIR_Opr dest, LIR_Opr tmp = LIR_OprFact::illegalOpr); 259 void leal(LIR_Opr src, LIR_Opr dest, LIR_PatchCode patch_code = lir_patch_none, CodeEmitInfo* info = NULL); 260 261 void rt_call(LIR_Opr result, address dest, const LIR_OprList* args, LIR_Opr tmp, CodeEmitInfo* info); 262 263 void membar(); 264 void membar_acquire(); 265 void membar_release(); 266 void membar_loadload(); 267 void membar_storestore(); 268 void membar_loadstore(); 269 void membar_storeload(); 270 void on_spin_wait(); 271 void get_thread(LIR_Opr result); 272 273 void verify_oop_map(CodeEmitInfo* info); 274 275 void atomic_op(LIR_Code code, LIR_Opr src, LIR_Opr data, LIR_Opr dest, LIR_Opr tmp); 276 277 #include CPU_HEADER(c1_LIRAssembler) 278 279 public: 280 281 static int call_stub_size() { 282 if (UseAOT) { 283 return _call_stub_size + _call_aot_stub_size; 284 } else { 285 return _call_stub_size; 286 } 287 } 288 289 static int exception_handler_size() { 290 return _exception_handler_size; 291 } 292 293 static int deopt_handler_size() { 294 return _deopt_handler_size; 295 } 296 }; 297 298 #endif // SHARE_C1_C1_LIRASSEMBLER_HPP